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Why return NotImplemented instead of raising NotImplementedError
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It's because __lt__() and related comparison methods are quite commonly used indirectly in list sorts and such. Sometimes the algorithm will choose to try another way or pick a default winner. Raising an exception would break...
warning about too many open figures
In a script where I create many figures with fix, ax = plt.subplots(...) , I get the warning RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory.
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Can “list_display” in a Django ModelAdmin display attributes of ForeignKey fields?
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edited Jul 25 '14 at 16:10
Denilson Sá Maia
38.5k2828 gold badges9898 silver badges107107 bronze badges
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How to uninstall the “Microsoft Advertising SDK” Visual Studio extension?
... don't need, but this one won't allow me. if I hover the (enabled!) button it says in a tooltip:
7 Answers
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Does MongoDB's $in clause guarantee order
...o let's say that you were matching on the values of _id in your documents with an array that is going to be passed in to the $in as [ 4, 2, 8 ].
Approach using Aggregate
var list = [ 4, 2, 8 ];
db.collection.aggregate([
// Match the selected documents by "_id"
{ "$match": {
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Calling a function of a module by using its name (a string)
What is the best way to go about calling a function given a string with the function's name in a Python program. For example, let's say that I have a module foo , and I have a string whose content is "bar" . What is the best way to call foo.bar() ?
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How to add a 'or' condition in #ifdef
How can I add a 'or' condition in #ifdef ?
3 Answers
3
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C# operator overload for `+=`?
...or the Garbage collection and memory management, which is a potential security hole in CLR strong typed world.
Nevertheless, let's see what exactly an operator is. According to the famous Jeffrey Richter's book, each programming language has its own operators list, which are compiled in a special m...
From an array of objects, extract value of a property as array
I have JavaScript object array with the following structure:
16 Answers
16
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What does it mean if a Python object is “subscriptable” or not?
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It basically means that the object implements the __getitem__() method. In other words, it describes objects that are "containers", meaning they contain other objects. This includes strings, lists, tuples, and dictionaries.
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